Struggling to get a mic going with my IDS-2CD7A26G0-P-IZHSY (ANPR Cams)

[Jackson67]

Hi, i'm trying to enable audio on my 2 anpr HIK vision cams, it has an audio in female 3.5min jack which presumably is my way in with any cheap IP cam mic, in reality none of the mics i have come across yet (3 bought) have a 3.5mm male output jack and are usually female RCA plugs. To that end i have a 1meter adapter lead (3.5 jack male to male RCA) which gets me very faint audio if I shout, so not much good. Literally the circuit board beating noise is the loudest thing in the browser.
The problem is this lead may not be the issue but i have to eliminate it first to get any further, so i probably need to get an adapter and not use a 1meter lead i guess. Unfortunately a male RCA to male 3.5 adapter (adapter not lead) is not something iv'e been able to find in the UK (still waiting for the france base one on ebay to arrive) so am really just trying to find someone with a similar experience who can maybe enlighten me. I've been a few weeks at this issue now and am no further getting audio with these cams, i'm getting poorer that's for sure! I am ok using the HIK browser interface so cannot see a problem there - despite the audio choices being just 'line' and not 'mic' for these cams interface.

Any help/experience/pointers apreciated. thanks /Sean

 

[lewic]

From what I remember, the mics to connect to the line in need to be amplified. These microphones would have a power input to go to a power source and another end (audio out) to go to the camera inputs. Make sure you go into the camera itself to select the audio in type.

 

[Jackson67]

Hi, thanks. Yes i think I'm right in thinking my mics are powered as they are on a POE injector line (cat 5) which arrives at a splitter, the cat 5 line becomes just a data cable and goes into the cam, the splitter has a power out cable that goes into the power in cable on the mic (mic pic attached) - then the mic's power out goes on to power my camera (green pin box pic) . So that said i believe my mic is powered but i'm happy to be told that's wrong but for now am just following logic with these parts until I get it to work properly. I'm hoping my problem is the adapter lead that iv'e had to use between the mic's phono output and my cameras 3.5 female jack input (sound in) that's causing me super low audio but until i get an adapter that hasn't got a 1 meter lead (just an adapter) i can't really test that. I reckon it'll make no difference at all truth be told! :-(
Interface wise i just have a drop down that offers me 'line' connection on these cams, i've attached some pics if that helps.

Sean

 

[lewic]

The type of mic you have shown will require an external power supply. The POE power is only to power the camera itself. There are some new cameras now that come with a 12 volt power out on the wiring harness but if yours does not have it then you would need to connect a source of power to the mic itself. Without powering the mic then the sound would be very quiet if you get any sound at all. For your settings on the cameras if you do not have any built in mic then it will only give you the option for line in. So sounds like you just need to supply power to the mic itself.

 

[looney2ns]

Hi, thanks. Yes i think I'm right in thinking my mics are powered as they are on a POE injector line (cat 5) which arrives at a splitter, the cat 5 line becomes just a data cable and goes into the cam, the splitter has a power out cable that goes into the power in cable on the mic (mic pic attached) - then the mic's power out goes on to power my camera (green pin box pic) . So that said i believe my mic is powered but i'm happy to be told that's wrong but for now am just following logic with these parts until I get it to work properly. I'm hoping my problem is the adapter lead that iv'e had to use between the mic's phono output and my cameras 3.5 female jack input (sound in) that's causing me super low audio but until i get an adapter that hasn't got a 1 meter lead (just an adapter) i can't really test that. I reckon it'll make no difference at all truth be told! :-(
Interface wise i just have a drop down that offers me 'line' connection on these cams, i've attached some pics if that helps.

Sean

Raise input volume to 100%, turn off the noise filter, and then retest.

 

[Jackson67]

OK, i had assumed the power from the 48v Injector was shared btwn the cam and the 12 volts (or whatever) the mic needed from what I gathered but maybe that's not the case then.
My wiring loom at the back of the cam does have a 12v power out pin block on it so would you suggest I use that to go into the power lead on the mic which is currently being powered by the splitter cable power lead?

 

[lewic]

No the POE injector doesn't power the mic. So the injector has a networking cable going to the RJ45 to the camera side. This powers the camera only. UNLESS you are not using a powered (POE) switch then you would need a 12v power going to the 5521 barrel connector input on the camera. So if you are using the 12v power on the camera then put a splitter on that cable with one side to the camera and other to the mic.

If you are using the poe injector and the camera has a 12v out.... Usually this "out" has either the green two conductor block terminals or a 5521 barrel connector. It usually also has a yellow sticker labeling 12v out.

 

[Teken]

There are only two ways to power the camera POE / 12 VDC.

If you use a 12 VDC POE Splitter this provides data only to the RJ45 and 12 VDC for the barrel jack.

You’ll need another (Y) splitter coming off the 12 VDC and a connector as seen here.

 

[tigerwillow1]

Yes i think I'm right in thinking my mics are powered as they are on a POE injector line (cat 5) which arrives at a splitter, the cat 5 line becomes just a data cable and goes into the cam, the splitter has a power out cable that goes into the power in cable on the mic (mic pic attached) - then the mic's power out goes on to power my camera (green pin box pic) .

If I'm understanding this correctly, you are doing it the right way. I've tried several different mics, none of which had the power out line, so I've got no experience there. All the ones I've tried just have power in and audio out, and as mentioned above you need to use a splitter cable on the POE splitter's DC output to connect to both the camera and mic power input. If the camera is working, it's obviously getting power ok. I use only Dahua cameras, and turning off the noise filter is a must. It might be better labeled as microphone killer or something like that. I tried a couple of mics that are physically similar to yours and none of them worked worth a hoot for me. The only one I've found to be good is this one:
Microseven IP Cameras

I see that on the same web page there's a link for a 3.5mm to RCA converter gadget. You're current adapter cable could possibly be ok, however.

 

[Jackson67]

thanks for all the input, wow.
OK i was just being led by things like this guys vid and copied his link up method:



He seems to manage to power both the cam and the mic by routing out the power from the splitter to the microphone - and then from the mic power out lead to his cam . That looked pretty simple to try so copied his way. Is the jury out on if this should work like this? or is the consensus that is should work like this then and not need a 2nd splitter cable?

I can see implementing a 2nd splitter cable (after the splitter box) is another possible option so i'll be having another go at this at the wknd.

Thanks for the various views on this, i'll report back when it works out for me

 

[tigerwillow1]

I'm just saying that some mics have the power splitter integrated into them, and some don't. If you have one with the integrated splitter, it should work ok. I've not run into that with the few mics that I've tried, and have needed to use the separate power splitter.

 

[Jackson67]

I'm just saying that some mics have the power splitter integrated into them, and some don't. If you have one with the integrated splitter, it should work ok. I've not run into that with the few mics that I've tried, and have needed to use the separate power splitter.

I see the variation in those different mic bundles and how you get them set up and the variables. I have a spower splitter cable that came with one mic so'l will try that. thanks

Thanks lewic, looney2ns, Jackson67 all that above is good info i can use too.

 

[Jackson67]

No the POE injector doesn't power the mic. So the injector has a networking cable going to the RJ45 to the camera side. This powers the camera only. UNLESS you are not using a powered (POE) switch then you would need a 12v power going to the 5521 barrel connector input on the camera. So if you are using the 12v power on the camera then put a splitter on that cable with one side to the camera and other to the mic.

If you are using the poe injector and the camera has a 12v out.... Usually this "out" has either the green two conductor block terminals or a 5521 barrel connector. It usually also has a yellow sticker labeling 12v out.View attachment 204530View attachment 204532

thanks Lewic, using the out of the power out of the camera was what I wasn't doing, it's working fine now.,

 

[IslandEye]

Have a similar microphone powering issue in pairing a microseven microphone (which comes with a 12V power splitter Y-cable) with a Dahua PTZ6C4G-45X camera (use either 24 V power or PoE+ from my PoE+ switch).

The PoE voltage - data splitter mentioned in the video above won't work since the microphone needs 12V, and the camera can be powered only by either the 24V in wire, or PoE+ (48V).

Are there PoE splitters that tap 12V off the PoE supply and pass through the full 48V or so of PoE+ of power and data to the camera? The PoE splitter in the video just splits out 12V and non PoE Ethernet (i.e there is no power on the Ethernet cable after the split)